void insertDtmf(
String tones,
[int duration,
int interToneGap]
)

Not documented.

Source

void insertDtmf(String tones, [int duration, int interToneGap]) {
  if (interToneGap != null) {
    _blink.BlinkRTCDTMFSender.instance.insertDTMF_Callback_3_(unwrap_jso(this), tones, duration, interToneGap);
    return;
  }
  if (duration != null) {
    _blink.BlinkRTCDTMFSender.instance.insertDTMF_Callback_2_(unwrap_jso(this), tones, duration);
    return;
  }
  _blink.BlinkRTCDTMFSender.instance.insertDTMF_Callback_1_(unwrap_jso(this), tones);
  return;
}